Surrounded by Orcs chk Mutate {3}{B} (If you cast

Mutate {3}{B} (If you cast this spell for its mutate cost

You may cast up to two instant and/or sorcery spells with total mana value 6 or less from your graveyard and/or hand without paying their mana costs

Fathomless descent — Enchanted permanent gets -X/-0

return it to its owner's hand

{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand

Surrounded by Orcs chk Mutate {3}{B} (If you castAmass Orcs 3, then target player mills X cards, where X is the amassed Army's power. (To amass Orcs 3, put three +1 +1 counters on an Army you control. It's also an Orc. If you don't control an Army, create a 0 0 black Orc Army creature token first.)